I can comment more later, but the AP Bio test changed two years ago. Middle kid took it last year as a 10th grader (after taking Biology & Chemistry prior to AP Bio).

She thought that the MC was pretty easy - more a critical thinking exercise than needing to know a bunch of Bio facts. She thought she bombed the FRQs, but I guess she didn't (she got a 5), though the FRQs required quite a bit of actual Bio knowledge.

Most AP tests run 2.5-3 hours.